What Steve said above ^, it's the reason for your apt-get error.Fix that first (as I said, we're still wondering where that line came from).dpkg will not install dependencies, so to use that you need to install dependencies first ie. libappindicator1gdebi should install dependencies, God knows why it didn't work.

“ computer users can be divided into 2 categories:Those who have lost data...and those who have not lost data YET ”Remember toBACKUP!

Gdebi will install dependencies, so obviously whatever this "Debian software installer" really is, it's stupid if it's just using "dpkg -i". The lack of any terminal or other helpful error message makes me think it's some GNOME thing.

You can now also use apt on the command line to install local deb files and pull in dependencies; its advantage over gdebi is that you can use it to install multiple debs in one go that can depend on one another. Its disadvantage is a trickier syntax.

stevepusser wrote:You must still remove line #19 from your /etc/apt/sources.list file. It is incorrect and causing the error, as has been clearly stated several times already. You can use Synaptic if installed to manage your repositories from a GUI.

It is possible to disable a line by commenting it out, but since you are going to have a working line in another file, remove it altogether.

# stretch-updates, previously known as 'volatile'# A network mirror was not selected during install. The following entries# are provided as examples, but you should amend them as appropriate# for your mirror of choice.#deb http://deb.debian.org/debian/ stretch-updates main contribdeb http://deb.debian.org/debian/ stretch main contrib non-free# deb-src http://deb.debian.org/debian/ stretch-updates main contribdeb http://deb.debian.org/debian/ stretch-backports main contrib non-free

Even after correcting the sources.list file, there is still a dependency problem. I don't know which package I need to install to resolve this.

In the future, you can just install gdebi and use it on the command line, or its gdebi-gtk GUI, since it will automatically install missing dependencies if available, or refuse to install them if it's an incompatible package. Dpkg will happily half-install incompatible packages and then you'll have a semi-broken system--this has led to innumerable posts here.

Apologies to all for the belated response. Subject now (correctly) marked as SOLVED.Chrome has been installed, as I corrected the malformed line in the install script.Also as a newbie to the Debian Forums, I had not enabled notifications, which is not enabled by default. Everything is now OK, and I shall continue my interest and education in Debian Linux.

Sort of related, in the meantime dolphin_oracle and I have come up with right-click context actions in Dolphin and Thunar to install one or more .deb files at a time with "apt install". Advantages over gdebi is that you can install multiple debs at once, some of which depend on others in that batch, such as a test upgrade of vlc-3.0 I just built where I did ten at once. It also allows downgrades, which gdebi refuses to do. The basic code could very probably be adapted to other file managers that allow scripted custom actions...goodbye gdebi and your oddball problems "the mpv package no longer provides mpv"